A study of mutual coupling effects on the direction finding performance of ESPRIT with a linear microstrip patch array using the method of moments

2002 ◽  
Author(s):  
S. Lundgren
Keyword(s):  
Method Of Moments ◽  
Mutual Coupling ◽  
Direction Finding ◽  
Coupling Effects ◽  
Microstrip Patch

scholarly journals How Varying the Dipole Lengths of a Uniform Linear Array Affects the Performance of an ESPRIT based Direction Finding Algorithm

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Method Of Moments ◽  
Mutual Coupling ◽  
Linear Array ◽  
Direction Of Arrival ◽  
Direction Finding ◽  
Direction Of Arrival Estimation ◽  
Simulation Tool ◽  
Uniform Linear Array ◽  
Coupling Matrix ◽  
Esprit Algorithm

Popularly used to collect data for the direction-of-arrival estimation of an incident source. Since the dipole elements of the uniform linear array are electromagnetically and mutually coupled, the presence of mutual coupling may degrade the performance of any direction finding algorithms. In order to mitigate mutual coupling, several references introduced modifications of the well-known ESPRIT algorithm. These modifications involve discarding the data collected by linear array at the two ends. However, the assumption of several literature that the mutual coupling matrix to be both Toeplitz and banded are invalid. This is pointed out by the “method of moments” based computer simulation tool used in this paper. The Toeplitz-and-banded coupling-matrix assumption leads to the mutual coupling being mis-modeled. Furthermore, previous studies failed to consider how varying the dipoles’ electrical length affect the performance of the direction-of-arrival estimation under mutual coupling.

Series expansions for the mutual coupling in microstrip patch arrays

1989 ◽  
Vol 37 (3) ◽  
pp. 269-274 ◽  
Author(s):  
D.R. Jackson ◽  
W.F. Richards ◽  
A. Ali-Khan
Keyword(s):  
Mutual Coupling ◽  
Series Expansions ◽  
Microstrip Patch
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